Hi,
I have a batch of peppermint fry in a tank with a few batches of longfin bn fry and the longfins are fine, no deaths in 3 batches but my peppermint batch seems to be losing 1-2 each week! I thought maybe they were getting out competed by larger longfin fry but there are longfin fry in there that are even younger than the peppermints so I can't see this being the reason. Only other thing I can think of is that the peppermints are more sensitive to water changes? But even then, surely at least some of the longfins would also die if the change was so drastic. Any advice or help would be greatly appreciated.
Regards,
Connor